He said: "I sometimes help an elderly lady with her groceries and she has an urn standing near the window with the remains of her husband.

"She always speaks with so much love about him but the jar he was in didn't reflect that at all.

"In that same period I read an article about widows, taboos and sex and intimacy and then I thought to myself ‘can I combine these themes and make an object that is about love and missing and intimacy?'"

The sex toy sits inside a memory box which is designed to help a lady “revive an intimate night with her love again”.

“The urn offers the possibility to conserve 21 grams of ashes of the deceased”

Mark Sturkenboom

It includes other features like a perfume diffuser and an amplifier for playing music from an iPhone, while the box can be locked with a key that doubles as a necklace.

Mark explained: ”21 Grams is a memory box that allows a widow to go back to the intimate memories of a lost beloved one.

“After a passing, the missing of intimacy with that person is only one aspect of the pain and grief."

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He added: “This forms the base for 21 Grams. The urn offers the possibility to conserve 21 grams of ashes of the deceased and displays an immortal desire.

"By bringing different nostalgic moments together like the scent of his perfume, 'their' music, reviving the moment he gave her her first ring, it opens a window to go back to moments of love and intimacy.”